CN102378042A - Method, system and packet analysis unit for measuring channel zapping delay of network television - Google Patents
Method, system and packet analysis unit for measuring channel zapping delay of network television Download PDFInfo
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- CN102378042A CN102378042A CN2010102593234A CN201010259323A CN102378042A CN 102378042 A CN102378042 A CN 102378042A CN 2010102593234 A CN2010102593234 A CN 2010102593234A CN 201010259323 A CN201010259323 A CN 201010259323A CN 102378042 A CN102378042 A CN 102378042A
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Abstract
The invention relates to a method, a system and a packet analysis unit for measuring the channel zapping delay of an internet protocol television. The method for measuring the channel zapping delay of the internet protocol television is implemented by using a system which comprises a scheduling unit, a remote controller, a stream providing unit, a digital video receiver and the packet analysis unit. The method comprises the following steps that: A) the scheduling unit controls the remote controller to transmit a channel zapping signal to the digital video receiver, and the digital video receiver starts to communicate with the stream providing unit, wherein a plurality of stream packets are in communication between the digital video receiver and the stream providing unit; B) the packet analysis unit captures the stream packets in the communication between the digital video receiver and the stream providing unit; and C) the packet analysis unit calculates the channel zapping delay of the internet protocol television according to the stream packets. The invention also discloses the system for measuring the channel zapping delay of the internet protocol television. By the invention, the channel zapping delay can be automatically measured.
Description
Technical field
The present invention relates to a kind of Internet protocol TV (Internet Protocol Television that is used to measure; Abbreviation IPTV) an experience quality (the Quality of Experience of system; Abbreviation QoE) technology of the factor; Particularly relate to a kind of method, system that is used to measure IPTV channel change delay (channel zapping delay), and package (packet) analytic unit.
Background technology
In recent years, during the IPTV service expands just apace, expection will bring extra income for communication service provides dealer's (Communication Service Provider is called for short CSP), and aggravation is for the impact of television industries.QoE is in order to describe the satisfaction of client for the expectation of IPTV service; And " I PTV channel change delay " that is to say the time that switches to the required cost of another channel from a channel, is a key factor of the amount of commenting one IPTV system.
Because present IPTV channel change delay relies on the tester mostly and measures with manual type, make measurement comparatively subjective and not accurate enough.Therefore how to found a kind of new method that is used to measure Internet protocol television channel switching delay, system and package analytic unit; Automatically to measure the IPTV channel change delay; And obtain objective and accurate measurement; Real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
The objective of the invention is to; Overcome the defective of the method existence of existing measurement IPTV channel change delay; And a kind of new method that is used to measure the IPTV channel change delay is provided; Technical problem to be solved is to make it can automatically measure the channel change delay of IPTV system, and obtains objective and accurate measurement, is very suitable for practicality.
Another object of the present invention is to; Overcome the defective of the method existence of existing measurement IPTV channel change delay; And a kind of new system that is used to measure the IPTV channel change delay is provided; Technical problem to be solved is to make it can automatically measure the channel change delay of IPTV system, and obtains objective and accurate measurement, thereby is suitable for practicality more.
An also purpose of the present invention is; Overcome the defective of the method existence of existing measurement IPTV channel change delay; And a kind of new package analytic unit that is used to measure the IPTV channel change delay is provided; Technical problem to be solved is to make it can automatically measure the channel change delay of IPTV system, and obtains objective and accurate measurement, thereby is suitable for practicality more.
The object of the invention and solve its technical problem and adopt following technical scheme to realize.A kind of method that is used to measure the IPTV channel change delay according to the present invention's proposition; It is to realize with a system; This system comprises a scheduling unit, is associated with a remote controller of this scheduling unit (remote controller), a crossfire (stream) provides the unit, by this remote controller control and the digital video receiver (Integrated receiver/decoder) of unit communication can be provided with this crossfire; And can capture and analyze the package analytic unit that this digital video receiver and this crossfire provide the crossfire package of intercell communication, this method comprises the following step:
A) this this remote controller of scheduling unit controls; So that transmitting a channel switching signal (channel change signal), this remote controller gives this digital video receiver; Whereby; This digital video receiver begins to provide unit communication a plurality of crossfire packages with this crossfire, to respond this channel switching signal that this digital video receiver is received;
B) this package analytic unit this digital video receiver of acquisition and this crossfire provide the said crossfire package of intercell communication; And
C) this package analytic unit is according to step B) in the said crossfire package that captured, calculate an IPTV channel change delay corresponding to this channel switching signal.
The object of the invention and solve its technical problem and also can adopt following technical measures further to realize.
Preferably; The aforesaid method that is used to measure Internet protocol television channel switching delay; At step C) in; This package analytic unit is to carry out following substep, and to calculate this Internet protocol television channel switching delay: c-1) obtain a very first time, this very first time is to respond this channel switching signal that it received and transmit the time that a world-wide web igmpinternet leaves package corresponding to this digital video receiver; C-2) obtained for one second time, this second time be corresponding to this digital video receiver after transmitting this world-wide web igmpinternet and leaving package, it receives the time of top line contingency table package; And c-3) difference of calculating this very first time and this second time is to obtain this Internet protocol television channel switching delay.
Preferably, the aforesaid method that is used to measure Internet protocol television channel switching delay is in steps A) in; This scheduling unit is to control this remote controller according to a predetermined scheduling; Give this digital video receiver so that this remote controller transmits a succession of channel switching signal, whereby, this digital video receiver begins to provide unit communication a plurality of crossfire packages with this crossfire; To respond each in the said channel switching signal that this digital video receiver received; At step C) in, this package analytic unit is according to step B) in the said crossfire package that captured, calculate a plurality of Internet protocol television channel switching delays that correspond respectively to said channel switching signal; This method also comprises a step D), this package analytic unit calculation procedure C) in a mean value of the said Internet protocol television channel switching delay of being tried to achieve.
Preferably; The aforesaid method that is used to measure Internet protocol television channel switching delay; Wherein said predetermined scheduling comprises a succession of operational order; Each operational order has the channel indication and a time interval, in steps A) in, this scheduling unit is to indicate according to the channel of said operational order to control this remote controller; Indicate corresponding said channel switching signal so that this remote controller transmits respectively with said channel, and the time that this remote controller transmits next channel switching signal is controlled according to each time interval of said operational order in this scheduling unit.
The object of the invention and solve its technical problem and also adopt following technical scheme to realize.A kind of system that is used to measure the IPTV channel change delay according to the present invention proposes is applicable to the IPTV channel change delay of measurement about a digital video receiver, and this digital video receiver is by remote controller control and can unit communication be provided with a crossfire.This system comprises a scheduling unit, and a package analytic unit.This scheduling unit is given this digital video receiver in order to control this remote controller so that it transmits a channel switching signal; Whereby; This digital video receiver begins to provide unit communication a plurality of crossfire packages with this crossfire, to respond this channel switching signal that this digital video receiver is received.This package analytic unit comprises that one monitors (monitoring) module and a computing module; This monitoring module provides the said crossfire package of intercell communication in order to capture this digital video receiver and this crossfire; The said crossfire package of this computing module in order to be captured according to this monitoring module calculates the IPTV channel change delay corresponding to this channel switching signal.
The object of the invention and solve its technical problem and also can adopt following technical measures further to realize.
Preferably; The aforesaid system that is used to measure Internet protocol television channel switching delay; This computing module of wherein said package analytic unit is to obtain this digital video receiver to respond this channel switching signal that it received and transmit the time that a world-wide web igmpinternet leaves package; With as a very first time; And this computing module is to obtain this digital video receiver to transmit the time that receives top line contingency table package after this world-wide web igmpinternet leaves package; With as one second time, this computing module calculates the difference of this very first time and this second time then, to obtain this Internet protocol television channel switching delay.
Preferably; The aforesaid system that is used to measure Internet protocol television channel switching delay; This remote controller is also controlled according to a predetermined scheduling in wherein said scheduling unit; Give this digital video receiver so that this remote controller transmits a succession of channel switching signal, whereby, this digital video receiver begins to provide unit communication a plurality of crossfire packages with this crossfire; To respond each in the said channel switching signal that this digital video receiver received; The said crossfire package that this computing module of this package analytic unit is also captured according to this monitoring module calculate a plurality of Internet protocol television channel switching delays that correspond respectively to said channel switching signal, and this computing module also calculates a mean value of said Internet protocol television channel switching delay.
Preferably; The aforesaid system that is used to measure Internet protocol television channel switching delay; Wherein said predetermined scheduling comprises a succession of operational order; Each operational order has the channel indication and a time interval; This scheduling unit is to indicate according to the channel of said operational order to control this remote controller, indicates corresponding said channel switching signal so that this remote controller transmits respectively with said channel, and this scheduling unit is to control the time that this remote controller transmits next channel switching signal according to each time interval of said operational order.
The object of the invention and solve its technical problem and also adopt following technical scheme to realize in addition.According to a kind of package analytic unit that is used to measure the IPTV channel change delay that the present invention proposes, it is implemented in a system, and this system comprises that a crossfire provides the unit, and a digital video receiver of unit communication can be provided with this crossfire.This package analytic unit comprises one and monitors module, and a computing module.This monitoring module provides a plurality of crossfire packages of intercell communication in order to capture this digital video receiver and this crossfire.The said crossfire package of this computing module in order to be captured according to this monitoring module calculates the IPTV channel change delay corresponding to this channel switching signal.This computing module is to obtain this digital video receiver to transmit a world-wide web igmpinternet (Internet Group Management Protocol; Be called for short IGMP) leave time of (leave) package; With as a very first time; And this computing module is to obtain this digital video receiver transmitting the time that receives top line contingency table (Program Association Table is called for short PAT) package after this IGMP leaves package, with as one second time; This computing module calculates the difference of this very first time and this second time then, to obtain this IPTV channel change delay.
The present invention compared with prior art has tangible advantage and beneficial effect.By technique scheme; Method, system and package analytic unit that the present invention is used to measure Internet protocol television channel switching delay have advantage and beneficial effect at least: the present invention can automatically measure wherein important QoE index of IPTV system; This IPTV channel change delay just, and obtain objective and accurate measurement.
In sum, the invention relates to a kind of method, system and package analytic unit that is used to measure Internet protocol television channel switching delay.This is used to measure the method for Internet protocol television channel switching delay; Be to comprise that a scheduling unit, a remote controller, a crossfire provide unit, a digital video receiver; And a system of a package analytic unit realizes; This method comprises: A) this this remote controller of scheduling unit controls is given this digital video receiver to transmit a channel switching signal, and this digital video receiver begins to provide unit communication a plurality of crossfire packages with this crossfire; B) this package analytic unit this digital video receiver of acquisition and this crossfire provide the said crossfire package of intercell communication; And C) this package analytic unit calculates an Internet protocol television channel switching delay according to said crossfire package.The present invention has also disclosed a kind of system that is used to measure Internet protocol television channel switching delay.Thereby realized the auto-measuring of channel change delay.The present invention has obvious improvement technically, and has tangible good effect, really is the new design of a novelty, progress, practicality.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention; Understand technological means of the present invention in order can more to know; And can implement according to the content of specification, and for let of the present invention above-mentioned with other purposes, feature and advantage can be more obviously understandable, below special act preferred embodiment; And conjunction with figs., specify as follows.
Description of drawings
Fig. 1 is the calcspar of a preferred embodiment of explanation the present invention system of being used to measure the IPTV channel change delay.
Fig. 2 is the flow chart of a preferred embodiment of explanation the present invention method of being used to measure the IPTV channel change delay.
Fig. 3 is the explanation one IPTV channel change delay and the sketch map in a time interval.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention; Below in conjunction with accompanying drawing and preferred embodiment; To the method that is used to measure Internet protocol television channel switching delay, system and its embodiment of package analytic unit, step, structure, characteristic and the effect thereof that proposes according to the present invention, specify as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can be known to appear in the following detailed description that cooperates with reference to graphic preferred embodiment.Through the explanation of embodiment, when can being to reach technological means that predetermined purpose takes and effect to obtain one more deeply and concrete understanding to the present invention, yet the appended graphic usefulness that only provides reference and explanation be not to be used for the present invention is limited.
See also Fig. 1 and shown in Figure 3, the present invention is used to measure the preferred embodiment of the system of IPTV channel change delay, is that integrated application is in an IPTV system.
The system that the present invention is used to measure the IPTV channel change delay comprises a scheduling unit 11, and a package analytic unit 12.This IPTV system comprises a remote controller 21, a digital video receiver 22, a hub (switch hub) 23, and a crossfire provides unit 24.This system that is used for measuring the IPTV channel change delay is in order to measure the IPTV channel change delay of this IPTV system about this digital video receiver 22.
This remote controller 21 is that (it is to close to be connected in this scheduling unit 11 and to receive this scheduling unit 11 controls to an infrared ray for infrared, IR) remote controller.This digital video receiver 22 is a STB (set-topbox is called for short STB), and it is by these remote controller 21 controls, and can provide unit 24 to communicate by letter through this hub 23 with this crossfire.This hub 23 is supported IGMP communication protocol, similarly is IGMPv2/v3.It is a Videoconferencing server (video server) that this crossfire provides unit 24, and it is in order to produce and to transmit multicast (multicast) MPEG-TS (Moving Picture Experts Group Transport Stream) crossfire constantly.
This scheduling unit 11 is given this digital video receiver 22 in order to control this remote controller 21 according to a predetermined scheduling so that this remote controller 21 transmits at least one channel switching signal.Should predetermined scheduling be the program that is integrated into (programmable) able to programme, and can set, and should predetermined scheduling comprise at least one operational order by the tester.In this preferred embodiment, this predetermined scheduling comprises a succession of operational order, and each operational order has channel indication (channel indication) and a time interval (time interval).This scheduling unit 11 is given this digital video receiver 22 according to should predetermined scheduling controlling this remote controller 21 so that this remote controller 21 transmits a succession of channel switching signal.That is to say; In this preferred embodiment; This scheduling unit 11 is to indicate according to the channel of said operational order to control this remote controller 21; Indicate corresponding said channel switching signal so that this remote controller 21 transmits respectively with said channel, and this scheduling unit 11 is to control the time that this remote controller 21 transmits next channel switching signal according to each time interval of said operational order.
This package analytic unit 12 comprises that one monitors module 121, a memory 122, and a computing module 123.This monitoring module 121 provides a plurality of crossfire packages of 24 communications in unit in order to capture this digital video receiver 22 and this crossfire.The said crossfire package that this monitoring module 121 is captured is to be temporary in this memory 122.The said crossfire package of this computing module 123 in order to be captured according to this monitoring module 121 calculates at least one IPTV channel change delay corresponding to this channel switching signal.In this preferred embodiment; This monitoring module 121 is to adopt existing package to monitor software to realize, similarly is
In the preferred embodiment, the scheduling unit 11, the function and operation, can be coupled to the remote controller 21 Jie a computer (not shown) of a processor to execute.Further, in the preferred embodiment, the packet analysis unit 12 function and operation, may be coupled to the hub 23 Jie another computer (not shown) of a processor to execute.
See also Fig. 1, Fig. 2 and shown in Figure 3, the preferred embodiment that the present invention is used to measure the method for IPTV channel change delay comprises the following step.
What deserves to be mentioned is, before carrying out following steps, comprise that a predetermined scheduling of a succession of operational order is provided by the tester in advance.Each operational order has the channel indication and a time interval.
In step 31, this scheduling unit 11 according to said operational order wherein a channel indicate and control this remote controller 21 indicate corresponding channel switching signal so that this remote controller 21 transmits with this channel.
In step 32,22 beginnings of this digital video receiver and this crossfire provide unit 24 a plurality of crossfire packages of communicating by letter, to respond this channel switching signal that this digital video receiver 22 is received.That is to say that this digital video receiver 22 is after receiving this channel switching signal, promptly beginning provides the unit 24 said crossfire package of communicating by letter with this crossfire.
In step 33, the said crossfire package that these monitoring module 121 these digital video receivers 22 of acquisition of this package analytic unit 12 and this crossfire provide 24 communications in unit.
In step 34, this monitoring module 121 of this package analytic unit 12 is stored in the said crossfire package that is captured in the step 33 in this memory 122 of this package analytic unit 12.The said crossfire package that is captured in the step 33 comprises that at least an IGMP leaves package, an IGMP adds (join) package, and has a PAT package (as shown in Figure 3) of Program Association Table.
In step 35; This scheduling unit 11 judges whether to finish test; That is to say that each channel in the said operational order of these scheduling unit 11 judgements indicates whether to be performed all controls this remote controller 21, so that a succession of channel switching signal of these remote controller 21 corresponding transmission.If then proceed step 36; Otherwise, get back to step 31, that is, this remote controller 21 is controlled according to a time interval corresponding in the said operational order in this scheduling unit 11, so that this remote controller 21 transmits next channel switching signal.
In step 36, this computing module 123 of this package analytic unit 12 calculates a plurality of IPTV channel change delay that correspond respectively to said channel switching signal according to said crossfire package stored in the step 34.Please cooperate consult shown in Figure 3; In this preferred embodiment; For each channel switching signal; This computing module 123 is to obtain this digital video receiver 22 to respond these channel switching signals that it received and transmit the time (corresponding to the time of leaving original channel) that this IGMP leaves package, with as a very first time; Obtain this digital video receiver 22 after transmitting this IGMP and leaving package and add package, receive the time (corresponding to the time of reception destination channel package) of first PAT package, with as one second time with IGMP; Then, calculate the difference of this very first time and this second time, to obtain this corresponding IPTV channel change delay.This computing module 123 repeats aforementioned computing, till the said IPTV channel change delay of corresponding said channel switching signal is all calculated respectively.
In step 37, a mean value of the said IPTV channel change delay of being tried to achieve in these computing module 123 calculation procedures 36 of this package analytic unit 12, this mean value promptly is " the IPTV channel change delay " of IPTV system.
In sum; The present invention is used to measure the System and method for of IPTV channel change delay, can automatically measure wherein an important QoE index, i.e. " the IPTV channel change delay " of IPTV system; And obtain objective and accurate measurement, so can reach the object of the invention really.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme scope of the present invention; When the technology contents of above-mentioned announcement capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (9)
1. method that is used to measure Internet protocol television channel switching delay; It is characterized in that: it is to realize with a system; This system comprises a scheduling unit, is associated with a remote controller of this scheduling unit, a crossfire provides the unit, by this remote controller control and a digital video receiver of unit communication can be provided with this crossfire, and can capture and analyze the package analytic unit that this digital video receiver and this crossfire provide the crossfire package of intercell communication; This method comprises the following step:
A) this this remote controller of scheduling unit controls; So that transmitting a channel switching signal, this remote controller gives this digital video receiver; Whereby, this digital video receiver begins to provide unit communication a plurality of crossfire packages with this crossfire, to respond this channel switching signal that this digital video receiver is received;
B) this package analytic unit this digital video receiver of acquisition and this crossfire provide the said crossfire package of intercell communication; And
C) this package analytic unit is according to step B) in the said crossfire package that captured, calculate an Internet protocol television channel switching delay corresponding to this channel switching signal.
2. the method that is used to measure Internet protocol television channel switching delay as claimed in claim 1 is characterized in that: at step C) in, this package analytic unit is to carry out following substep, to calculate this Internet protocol television channel switching delay:
C-1) obtain a very first time, this very first time is to respond this channel switching signal that it received and transmit the time that a world-wide web igmpinternet leaves package corresponding to this digital video receiver;
C-2) obtained for one second time, this second time be corresponding to this digital video receiver after transmitting this world-wide web igmpinternet and leaving package, it receives the time of top line contingency table package; And
C-3) difference of calculating this very first time and this second time is to obtain this Internet protocol television channel switching delay.
3. the method that is used to measure Internet protocol television channel switching delay as claimed in claim 1; It is characterized in that: in steps A) in; This scheduling unit is to control this remote controller according to a predetermined scheduling; Give this digital video receiver so that this remote controller transmits a succession of channel switching signal, whereby, this digital video receiver begins to provide unit communication a plurality of crossfire packages with this crossfire; To respond each in the said channel switching signal that this digital video receiver received; At step C) in, this package analytic unit is according to step B) in the said crossfire package that captured, calculate a plurality of Internet protocol television channel switching delays that correspond respectively to said channel switching signal; This method also comprises a step D), this package analytic unit calculation procedure C) in a mean value of the said Internet protocol television channel switching delay of being tried to achieve.
4. the method that is used to measure Internet protocol television channel switching delay as claimed in claim 3; It is characterized in that: this predetermined scheduling comprises a succession of operational order; Each operational order has the channel indication and a time interval; In steps A) in; This scheduling unit is to indicate according to the channel of said operational order to control this remote controller, indicate corresponding said channel switching signal so that this remote controller transmits respectively with said channel, and the time that this remote controller transmits next channel switching signal is controlled according to each time interval of said operational order in this scheduling unit.
5. system that is used to measure Internet protocol television channel switching delay; It is characterized in that: it is applicable to the Internet protocol television channel switching delay of measurement about a digital video receiver, and this digital video receiver is by remote controller control and can unit communication be provided with a crossfire; This system comprises:
One scheduling unit; So that transmitting a channel switching signal, it gives this digital video receiver in order to control this remote controller; Whereby, this digital video receiver begins to provide unit communication a plurality of crossfire packages with this crossfire, to respond this channel switching signal that this digital video receiver is received; And
One package analytic unit; Comprise that one monitors a module and a computing module; This monitoring module provides the said crossfire package of intercell communication in order to capture this digital video receiver and this crossfire; The said crossfire package of this computing module in order to be captured according to this monitoring module calculates the Internet protocol television channel switching delay corresponding to this channel switching signal.
6. the system that is used to measure Internet protocol television channel switching delay as claimed in claim 5; It is characterized in that: this computing module of this package analytic unit is to obtain this digital video receiver to respond this channel switching signal that it received and transmit the time that a world-wide web igmpinternet leaves package; With as a very first time; And this computing module is to obtain this digital video receiver to transmit the time that receives top line contingency table package after this world-wide web igmpinternet leaves package; With as one second time; This computing module calculates the difference of this very first time and this second time then, to obtain this Internet protocol television channel switching delay.
7. the system that is used to measure Internet protocol television channel switching delay as claimed in claim 5; It is characterized in that: this remote controller is also controlled according to a predetermined scheduling in this scheduling unit; So that transmitting a succession of channel switching signal, this remote controller gives this digital video receiver; Whereby; This digital video receiver begins to provide unit communication a plurality of crossfire packages with this crossfire, to respond each in the said channel switching signal that this digital video receiver received, the said crossfire package that this computing module of this package analytic unit is also captured according to this monitoring module; Calculating corresponds respectively to a plurality of Internet protocol television channel switching delays of said channel switching signal, and this computing module also calculates a mean value of said Internet protocol television channel switching delay.
8. the system that is used to measure Internet protocol television channel switching delay as claimed in claim 7; It is characterized in that: this predetermined scheduling comprises a succession of operational order; Each operational order has the channel indication and a time interval; This scheduling unit is to indicate according to the channel of said operational order to control this remote controller; Indicate corresponding said channel switching signal so that this remote controller transmits respectively with said channel, and this scheduling unit is to control the time that this remote controller transmits next channel switching signal according to each time interval of said operational order.
9. package analytic unit that is used to measure Internet protocol television channel switching delay, it is characterized in that: it is implemented in a system, and this system comprises that a crossfire provides the unit, and a digital video receiver of unit communication can be provided with this crossfire; This package analytic unit comprises:
One monitors module, in order to capture this digital video receiver and this crossfire a plurality of crossfire packages of intercell communication is provided; And
One computing module in order to the said crossfire package that is captured according to this monitoring module, calculates an Internet protocol television channel switching delay;
This computing module is to obtain this digital video receiver to transmit the time that a world-wide web igmpinternet leaves package; With as a very first time; And this computing module is to obtain this digital video receiver to transmit the time that receives top line contingency table package after this world-wide web igmpinternet leaves package; With as one second time, this computing module calculates the difference of this very first time and this second time then, to obtain this Internet protocol television channel switching delay.
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Application publication date: 20120314 |